The most popular European-made transport aircraft before World War II.
A Zeppelin is a type of controllable, rigid airship.
The most important types of local winds are the sea-land breeze, the mountain-valley breeze as well as the downslope winds.
Blood vessels in fishes' gills absorb oxygen and release carbon dioxide.
This animation compares a modern living room and a typical bourgeois salon.
In 1946 a Hungarian scientist was the first person to detect radar echoes from the Moon.
The emergency landing of the pilot appears in the frame story of Antoine de Saint-Exupéry´s most famous novel, The Little Prince.
Soldiers of the ancient Macedonian Kingdom were dreaded warriors.
Hovercraft are capable of travelling at high speed above the surface of water.
The Ironsides were members of the Parliamentarian cavalry formed by Oliver Cromwell during the English Civil War.
Ancient Greek heavy infantryman.
The Altar of Peace, commissioned during the reign of Augustus, was one of the most important works of ancient Roman art.
The battle, that is considered to be a tactical masterpiece, meant a decisive victory for Alexander the Great against Persia.
Maharajas were Hindu rulers of large regions of India.
Calculating the volume of a sphere is possible using an appropriate cylinder and cone.
The screw pump commonly attributed to Archimedes made irrigation much more effective
African tribes have their own distinct cultures.
Wines of the Tokaj wine-growing region are well known worldwide.
Medieval kings were typically depicted sitting on their thrones, wearing a crown and the Royal regalia.
The surface of a sphere consists of the set of points which are all at the same distance from a given point in space.